KR100706323B1 - Bolt installation structure of segmented precast concrete sleeper - Google Patents

Abstract

The present invention relates to a bolt installation structure of a segmented precast (PC) concrete sleeper. In particular, in a segmented precast concrete sleeper, a bolt having a head portion at a connection portion of the sleeper is buried in a vertical direction to expose a spiral portion. The outer periphery of the bolt is embedded with a cushioning rubber, the bolt is characterized in that at least 2/3 of the total thickness of the sleeper is embedded.

Therefore, workability is very good and simple when interconnecting long and short precast concrete sleepers, and it is possible to prevent a part of bolted sleepers from being broken due to external impact, thereby preventing weakening of the sleepers. In addition, it is possible to completely prevent the bolt buried in the sleeper to flow or escape by the strong impact applied from the outside during transportation or installation of the sleepers.

Precast concrete, sleepers, bolts, cushioning rubber, joint plates, strands

Description

Bolt installation structure of segmented precast concrete sleeper

1 is a block diagram of a general branching machine.

Figure 2 is a partially cutaway exploded perspective view of a conventional segmented precast concrete sleeper.

Figure 3 is a cross-sectional view of the installation state of the conventional segmented precast concrete sleepers.

Figure 4 is a partially cutaway exploded perspective view of a segmented precast concrete sleeper to which the present invention is applied.

Figure 5 is a longitudinal cross-sectional view of the installation state of the segmented precast concrete sleeper to which the present invention is applied.

Figure 6 is a cross-sectional view of the installation state of the segmented precast concrete sleepers to which the present invention is applied.

Figure 7 is a plan view of a state in which the sleeper to which the present invention is applied is installed in the tap.

* Description of symbols on the main parts of the drawings *

1: sleeper 2: bolt

3: cushioning rubber 4: dustproof pad

5: seam plate 6: washer

7: nut 1a: stranded wire

21: head part 22: spiral part

41, 51: bolt through hole

The present invention relates to a bolt installation structure of a segmented precast concrete sleeper, and more particularly, a part of the bolt used when interconnecting a long and short precast (PC) concrete sleeper through a seam plate. Insert insert is installed inside, but the outer periphery of the bolt is covered with a cushioning rubber to insert into the sleeper to facilitate the connection of precast concrete sleepers, due to the external impact of the broken part of the sleeper coupled to the bolt It is possible to prevent the weakening of the binding force, and also to prevent the separation, flow or withdrawal of the bolt coupling nut embedded in the sleeper by a strong impact applied from the outside during transportation or installation of the sleepers in advance.

In general, in the section of the station, the track equipment installed at the branch point in order to branch from one line to another, such as changing the course from the main line to the side line, is called a diverter, and the direction of such a diverter is called a track diverter.

In this case, as shown in FIG. 1, the branching unit includes a point portion for selecting which line to enter, a crossing portion intersecting the gauge line (rail), and a lead portion formed between the front end of the crossing portion at the rear end of the point portion.

However, in the conventional branching machine, most of the neck sleepers are used, and thus construction accuracy decreases due to field assembly, the lifespan of the sleepers is short, the deterioration force is weak, and transportation and laying due to the long sleepers are difficult.

Accordingly, the present applicant has developed a connecting device of the segmented precast concrete sleepers to solve the problems of the conventional body sleepers installed in the branching machine and re-issued with the domestic patent application No. 2002-0083872 (name: PC sleeper connecting device). In this, the shape of the seam plate of various forms is presented.

Therefore, compared with the conventional neck sleeper, the weight of the sleeper is possible, so that the track is stable, precise construction is possible according to the assembly of the plant, the branching site can be installed by the linkage of the sleeper, and the phase resistance is stable. By separating the long sleepers into short sleepers, carrying and laying could be easily performed, and stability and riding comfort due to high speed were improved.

However, in the conventional segmented precast concrete sleepers, bolts and nuts, which are fastening devices for fixing a joint plate for interconnecting two sleepers having different lengths, are installed and coupled as shown in FIGS. 2 and 3. Has a configuration

That is, the nut 13 inserted into the rod 12 made of synthetic resin in the vertical direction at both ends of the long and short sleepers 11 is inserted into the upper and lower surfaces, but the rod 12 and the nut 13 are inserted. The bottom end of the) is formed with a rectangular anti-flow cap 121 and the anti-flow projections 131, respectively, and the joint plate 15 together with the buffer pad 14 at the upper surface of the contact portion of the long, short sleeper (11) ) Is fixed to the bolt 16 to maintain the long and short sleepers (1) interconnected to the nut 13 inserted into the sleeper (1).

However, such a configuration is such that the nut itself coupled to the bolt is inserted into the sleeper while being inserted into the rod while being formed long enough to penetrate the sleeper, and of course, to prevent rotation when the bolt is coupled to the nut. At the lower end of the nut, a rectangular anti-flow cap and protrusion must be formed, and the bolt is also long enough to penetrate the sleeper, which not only increases the production cost of the fastening device, but also makes the connection work complicated. In addition, when a strong impact is applied from the outside during the transport and installation of the sleeper, there is a problem such that the bolt coupling nut embedded in the sleeper in the form of being fitted to the sleeper is pushed down to the sleeper to be separated or flowed.

The present invention has been devised to solve such a conventional problem, the track is stable through the weight of the sleeper, it is possible to precise construction according to the factory assembly, it is possible to install the branch site by the tie of the sleeper It is stable due to its high phase resistance and can be easily transported and laid by separating long sleepers into short sleepers, and long and short precast concrete developed to improve stability and ride comfort due to high speed. When forming the sleepers, insert the rubber rubber bolts on the outer periphery to 2/3 position with respect to the vertical direction of the sleepers to connect the long and short precast concrete sleepers. This can prevent the weakening of the binding force due to the breakage of the bolted part of the sleeper, and also during the transportation or installation of the sleepers. To provide an installation structure of a bolt segmented precast concrete railroad ties which can prevent the flow of the bolt embedded in the sleeper by a strong impact applied from the outside in advance, it is an object.

Bolted structure of the segmented precast concrete sleepers of the present invention for achieving the above object, in the segmented precast concrete sleepers molded to be long and short using precast concrete, the head of the connection portion of the sleeper One bolt is embedded in the vertical direction so that the spiral portion is exposed, characterized in that the outer periphery of the bolt is embedded with a cushioning rubber.

At this time, the bolt is characterized in that at least two-thirds of the total thickness of the sleeper is embedded.

In addition, the bolts are buried in a pair of one, two or four corresponding to the number or position of the bolt through holes formed in the joint plate for connecting the long, short sleepers, but in one case diagonally It is characterized by each embedded.

The head of the bolt includes a shape cut on both sides in a hemispherical or hemispherical shape, including a square or hexagon.

In addition, the long, short sleepers are formed so that the longitudinal cross-section has a trapezoidal shape, characterized in that the longer strands in the longitudinal direction in the inside of the long and short sleepers.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a partially cutaway exploded perspective view of a segmented precast concrete sleeper to which the present invention is applied, and FIG. 5 is a longitudinal cross-sectional view of an installation state of the segmented precast concrete sleeper to which the present invention is applied, and FIG. The installation state cross-sectional view of the applied segmented precast concrete sleeper is shown, Figure 7 shows a plan view of the state in which the sleeper to which the present invention is applied is installed on the tapper.

According to the present invention, in the segmented precast concrete sleeper molded to be long and short using precast concrete, the threaded portion of the bolt 2 having the head portion 21 is provided at the connecting portion of the sleeper 1. Buried in the vertical direction so as to expose (22), characterized in that the outer periphery of the bolt (2) covered with a buffer rubber (3).

At this time, the bolt (2) is characterized in that at least 2/3 of the total thickness (t) of the sleeper (1) is embedded.

In addition, the bolt (2) is one, two or four corresponding to the number or position of the bolt through hole 51 formed in the joint plate (5) connecting the long and short sleepers (1) Buried in a pair, but one case is characterized in that each buried diagonally to each other.

The head 21 of the bolt 2 includes a shape in which both sides are cut in a hemispherical shape or a hemispherical shape, including a rectangle or a hexagon.

In addition, the long, short sleepers (1) is formed so that the longitudinal cross-section has a trapezoidal shape, it is characterized in that the strands (1a) further embedded in the longitudinal direction inside the long and short sleepers (1).

Referring to the effects of the present invention configured as described above are as follows.

First, the sleeper of the present invention is formed into long and short sleepers (1) having a long and short shape at the same time the longitudinal section has a trapezoidal shape using precast concrete, as described above using the precast concrete When the long and short sleepers 1 are molded, the spiral portion 22 is exposed to the upper surface of the connecting portion 1 so that the body portion of the bolt 2 is embedded in the vertical direction.

At this time, the bolt (2) has a variety of numbers, such as one, two or four in each of the long and short sleepers (1) corresponding to the number or position of the bolt through hole 51 formed in the joint plate (5) In the case of embedding each one, each of them is laid diagonally to each other to distribute the pressure so that the joint plate 5 or bolt 2 is not deformed by the pressure applied to the long and short sleepers 1. It is good to give.

However, in practice, it is more stable to bury two or four than to bury one, as well as the pressure applied through the long and short sleepers 1 to the seam plate 5 and the bolts. (2) can be received evenly and can prevent them from being deformed.

On the other hand, when embedding the bolt 2 into the inside of the sleeper 1 by embedding the cushioning rubber (3) on its outer periphery, when the shock is applied through the bolt (2) from the outside ( By the anti-vibration action of 3) the impact force can be prevented from being transmitted to the sleeper (1) formed of concrete, it is possible to prevent the weakening of the binding force due to breakage of the coupling portion of the bolt (2) and the sleeper (1).

In addition, the buffer rubber (3) also prevents the inflow of moisture into the bolt (2) to prevent the rust on the bolt (2), so that the bolt (2) play sluggish due to shortened life and bonding force Weakening is prevented beforehand.

In addition, when the bolt 2 is inserted into the sleeper 1 as described above, the body portion of the bolt 2 is buried up to at least 2/3 of the total thickness t of the sleeper 1, but the bolt 2 ) Is to be caught in the buried groove of the sleeper (1) by using a head 21 having a shape in which both sides in the hemispherical or hemispherical shape including a square or hexagon.

Therefore, the coupling force of the bolt 2 and the sleeper 1 can be strengthened, so that the dustproof pad 4 and the joint plate 5 are placed on the connection part of the sleepers 1 and the washer 6 is mounted on the bolt 2. Fitting the nut and tightening the nut (7) to interconnect the two long and short sleepers (1) and then install the rails and the train proceeds, the joint plate (5) installed at the connection of the sleepers (1) Even if it is bent to any one side by the vertical or the like, even if a vertical pressure is applied to the bolt 2, the bolt 2 is maintained in the state buried in the sleeper (1).

That is, the head 21 has a shape in which both sides of the bolt 2 are embedded at least 2/3 of the total thickness t of the sleeper 1 and at the same time, both sides of the hemisphere or hemisphere, including a square or a hexagon, are cut. The bolt 2 itself is prevented from being pulled upward by the locking operation of the bolt 2 so that the bolt 2 is completely buried on the sleeper 1 even if any impact is applied from the outside or draw pressure is applied upward. Form will be maintained.

At this time, if the bolt 2 is not buried up to at least 2/3 of the total thickness of the sleeper 1, the sleeper of the site where the bolt 2 is buried due to deformation of the bolt 2 when the high-load train passes through The strength of (1) is not secured.

In addition, the sleeper (1) is formed so that the longitudinal section has a trapezoidal shape, by embedding the strands (1a) in the longitudinal direction in the inside of the sleeper (1) can strengthen the bending strength of the sleeper (1) weakened roadbed Even if the sleeper sags in one of the long and short sleepers 1 connected through the joint plate 5, the cutting or bending itself is prevented.

Meanwhile, the joint plate 5 for connecting the long and short sleepers 1 is formed in a rectangular plate shape using an iron plate as in the prior art, and the bolts are formed at four corners of the joint plate 5. A bolt through hole 51 into which (2) can be fitted is provided.

Therefore, one side of the long and short sleepers (1) to have a gap (d) of a predetermined width adjacent to each other, and then place the joint plate (5) in the upper part of the connection of the two sleepers (1) through the bolt The spirals of the bolts 3 are protruded through the ball 51, and then the washer 6 is inserted into the bolt 2, and the nut 7 is fastened to fix the joint plate 5 so that two long and The short sleeper 1 has a form interconnected via a joint plate 5 secured to the bolt 2 and the nut 7.

At this time, when the long and short sleepers 1 are interconnected only through the joint plate 5 as described above, the impact force transmitted through the long and short sleepers 1 is directly transmitted to the joint plate 5 to connect the joint plates. Including (5), there is a fear that the bolt 2 is deformed.

Therefore, between the joint plate (5) and the upper surface of the long and short sleepers (1) by adding a buffer pad (4) provided with a bolt through hole 41 is generated in the train and the rail and the long and short Since the impact force transmitted through the sleeper 1 is primarily buffered by the buffer pad 4 and then transmitted to the joint plate 5 and the bolt 2, the bolt 2 including the joint plate 5 is provided. Can be prevented from being deformed by the impact force.

Meanwhile, a method of fixing the pad 4 and the joint plate 5 through the bolt 2 and the nut 7 to have a gap having a predetermined width at the connection portion of the long and short sleepers 1 is provided. When two long and short sleepers (1) are interconnected through each other, even if the center of gravity of the vehicle is concentrated in one of the two sleepers (1), only the sleeper is as wide as the gap (d) of the seam plate (5). It is lowered to the roadbed side mainly, and returned to its original state by the elastic force and the restoring force of the joint plate 5.

That is, when the center of gravity of the vehicle is concentrated on one of the long and short sleepers 1, the joint plate 5 is bent like a leaf spring and returned to its original state by its elastic force and restoring force. Instead of inclining to one side, only the sleeper is down to the roadbed side by the width of the gap d as much as possible, and then returns to its original position.

Therefore, the resistance to the horizontal direction of the segmented precast concrete sleepers against the train load can be increased, and the stability of the track can be improved by suppressing the relative displacement between the precast concrete sleepers and the lower base layer.

In addition, by forming the long and short sleepers (1) itself in precast concrete, the weight can be increased, so that the track is stable and can be assembled and transported in the production plant of the sleepers, so that precision construction is possible. It is possible to install on-site tap-changer by the connection field, it is stable because of its large resistance to drawing, and can be transported and laid separately by two sleepers (1), and it is possible to improve stability and riding comfort due to high speed.

This invention can be implemented in other various forms, without deviating from the mind or main characteristic. For this reason, the above-described embodiments are merely examples in all respects and should not be interpreted limitedly.

The scope of the present invention is shown by the scope of the claims, which are not limited by the specification text. Again, all variations and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

As described in detail above, according to the bolt installation structure of the segmented precast concrete sleepers according to the present invention, when the long and short precast concrete sleepers are interconnected, workability is very good and simple, It is possible to prevent a part of the combined sleepers from being broken, thereby preventing weakening of the bonds of the sleepers, and also to prevent the bolts buried in the sleepers from moving or releasing by the strong impact applied from the outside during transportation or installation of the sleepers. It is a very useful invention that can be completely prevented.

Claims (7)

In the segmented sleepers molded to long and short using precast concrete, The bolt having the head part is buried in the vertical direction so that the spiral part is exposed, and the outer circumference of the bolt is covered with a cushioning rubber, The bolt head structure of the precast concrete sleeper, characterized in that the two sides are cut form in the hemispherical or hemispherical including the square or hexagon. The method according to claim 1, The bolt is bolt installation structure of the segmented precast concrete sleeper, characterized in that at least 2/3 of the total thickness of the sleeper is embedded. The method according to claim 2, Segmental precast concrete characterized in that the bolts are buried in one, two or four pairs corresponding to the number or position of the bolt through holes formed in the joint plate for connecting the long and short sleepers Bolt mounting structure of sleepers. The method according to claim 3, If the bolt is embedded in one sleeper bolt installation structure of the segmented precast concrete sleeper, characterized in that the buried in a diagonal direction with each other. delete The method according to claim 4, The sleeper bolt installation structure of the segmental precast concrete sleeper, characterized in that the longitudinal section is formed to have a trapezoidal shape. The method according to claim 6, Segmented precast concrete sleeper bolt installation structure, characterized in that further embedded in the liner in the longitudinal direction of the sleeper.

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